若log2[log2(log2x)]=0,则x=______.
由题得log2(log2x)=1
又log2x=2
∴x=4
∴方程的解为x=4.
故答案为:4.
职业禁忌证有机磷
A.内分泌疾病B.晶状体浑浊C.全血胆碱脂酶活性降低D.慢性副鼻窦炎E.听力减退
低碳钢的碳含量()
A.≤0.35%
B.≤0.25%
C.≤0.45%
D.>0.6%